PROS: Very simple to use, Notifies you of contacts who are on Viber, Decent call quality, Send photos and videos, Stickers and emoticons to liven up chats, Group messaging with up-to 100 people, Hold & Talk feature

PROS: Focus on privacy and security, Send images, videos and voice messages, Close enough to stock messaging app to make it very easy to use, Customize your messages with different themes, fonts and photos